The bridge jump video has so far been shared more than 3,000 times from Mr Price's Facebook page, as well as receiving several hundred 'likes'.

'Wetnominate' began with social media users being dared to empty a bucket of water over themselves before nominating others to do the same.

But there are now concerns that it is escalating to dangerous levels.

Commenting on the incident, South Wales Police said: "This individual is putting himself in serious danger.

"Of course, we advise against such reckless behaviour, which could have tragic consequences."

But Mr Price, who is a builder by trade, defended his actions to ITV Cymru Wales.

I find [the attention] mad - I didn't think it was going to be so big. I don't regret it, no - it was a good rush. I've grown up jumping off that bridge and people shouldn't be so stupid as to copy me. I only did it because I've done it before.

– Jamie Price, speaking to ITV Cymru Wales

Filmed by a friend, Jamie Price leaps off Coed Bridge in the Cynon Valley.

He somersaults as he heads towards the water.

Arms outstretched, the 20-year-old prepares to plunge into the water.

Police are now warning against others copying Mr Price's actions - while Mr Price himself agrees people shouldn't copy him.

'Wetnominate' is one of several internet crazes to circulate on social media in recent months.